| A | B |
|---|
| antigen | proteins found on the surface of cells that stimulate an immune response. |
| rhesus factor | the negative and positive in blood type refer to the presence or absence of this antigen on RBC |
| erythrocyte | the name for a red blood cell |
| hemoglobin | protein this protein molecule in erythrocytes (RBCs) binds to oxygen |
| anemia | a condition in which blood oxygen levels are reduced due to deficiencies in hemoglobin or RBCs |
| leukocyte | the name for a white blood cell |
| platelet | cell fragments in blood that clump together at damaged blood vessel to help with blood clotting |
| thrombus | a blood clot that blocks a blood vessel |
| embolus | a blood clot that dislodges and travels through the circulatory system to another part of the body |
| antibody | a Y-shaped protein that reacts with an antigen |
| agglutination | the clumping of blood cells caused by the bonding of antigens and antibodies |
| phagocytosis | process in which a WBC engulfs and destroys a microbe |
| macrophage | "big eater" - a phagocytic white blood cell found in tissues |
| pus | a thick, liquid made of digested WBC and microbes |
| inflammatory response | nonspecific immune response characterized by swelling, heat, redness, pain |
| complement protein | plasma protein that helps to defend agains microbes by tagging, puncturing, or coating them in mucus |
| T cell | a lymphocyte that is processed in the thymus. It identifies and attacks foreign invaders |
| B cell | a lymphocyte that makes antibodies |
| receptor site | binding site on cell membrane for hormones, nutrients, other needed materials |
| helper T cell | lymphocyte with receptors that identify and bind to foreign invaders (sentry) |
| killer T cell | lymphocyte that kills infected cells by puncturing their cell membranes |
| suppressor T cell | lymphocyte that turns OFF immune system |
| memory B cell | lymphocyte that retains information about the shape of antigens for future infections |
| allergy | inappropriate immune response to environmental antigens |
| pluripotent cell | cell that is capable of developing into a number of specialized cells |
| autoimmune | type of disease in which the body mistakenly attacks "self" tissues |
| fibrin | threads that trap red blood cells and platelets to help with clotting |
| universal donor | people with type O blood are called this |
| universal acceptor | people with type AB blood are called this |
| plasma | the fluid portion of blood (mainly water) |
